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Subtract 40/7 from 70/8

1st number: 8 6/8, 2nd number: 5 5/7

70/8 - 40/7 is 85/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 7 is 56
  2. For the 1st fraction, since 8 × 7 = 56,
    70/8 = 70 × 7/8 × 7 = 490/56
  3. Likewise, for the 2nd fraction, since 7 × 8 = 56,
    40/7 = 40 × 8/7 × 8 = 320/56
  4. Subtract the two fractions:
    490/56 - 320/56 = 490 - 320/56 = 170/56
  5. After reducing the fraction, the answer is 85/28
  6. In mixed form: 31/28

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